Intermittent movement for motion-picture apparatus.



N. POWER. INTERMITTENT MOVEMENT FOB. MOTION PICTURE APPARATUS. 7

APPLICATION FILED FEB. 26, 1909;

Patented Feb. 24, 1914 SI we 14km 3.51 arrow/1m;

v tent Movements nnnrnn NICHOLAEZ PUVJEIESL,

or A

OOKLYN, NEW" YORK.

.rnrnnnir'rnnr Morniirnntr resv erosion-sterner; nrrana'rns.

ratus, of which the following is specification.

' This invention relates to motion picture apparatus and more particularly to amechanism for impartingintermittent movement to the translucent film.

The, invention contemplates the unprovement of motion picture apparatus 1n respect to means employedfor imparting in te'rmit-tent movement to the'filmby 1ncreasing the durability ofthefilm moving mechtaken in "plane of shaft, or spindle.

is a vertical section anislm-and by providing means whereby the -period of movement of the film may be made short and the period otrest made relatively long.

The invention also contemplates the provision of film moving devices which lnsure a"high degree of accuracy in action to-- gether'w'ith simplicity of construction.

The invention also contemplates the provision of film actnating-dewces of such design that the rat-iopt theperio'd of rest of the film to the period of movementm'ay'be.

made as great as may be desired, and a pos1- tivefeeding action of the iilm may be in sured at all times.

i In the accompanying drawings, 1 have illustrated the invention as embodied in two different forms otdeviccs for imparting movements of the film, but t Wlli be understood that modifications in the details of construction of the'devices embodying the inventlon may be made Without departing from the spirit of the invention.

' In theaccompanying drawings Fighrc 1, through the devices for imparting intermittent movement to one of the axis of the driving Fig. ,2, is an elevational view of the devices shown in Fig. 1,, lookingin'thedirection indicated by the arrow in Fig. 1. Fig. 3, is anelevational viewed: 'the structure shown in Fig.2, but. with the parts in different positions. Figs. 4 and 5, 2 and 3 illusof mechanism for producing intermittent movement of the film: Fig. 6, is a sectional view of the for. Motion-Picture Appathe flm feeding sprockets, the section being- ,Specification of Letters Patent.-

i l t 1 11.

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' in any position but that illustrated in I m at ely P atented 15 Serial No. 480x277.

vices shown in and 5, the section (.0 twine; taken in the plane of: the axis of the tiring shaft. or spihdle.

l-tefeltring to the drawings in which corresnondiitg' parts are designated by similar characters of reference in the several views: The sprocket by which intermittent motion imparted to the film is mounted on the spindle 5; which is mounted in a suitable carriage. This carriage also carries a shaft 7, bearing; a flywheel S of special construction which will hereinafter be described in detail. Continuous rotation of the shaft ?.is produced through suitable gearing in mesh with the main gear of the machine. The shaft is rotated intermittently and the mechanism tor producing this intermittent rotation 01"? the said shaft or spindle comprises the flywheel S, certain members mounted thereon and certain-novel devices on the spindle 5. these parts beingillustrated in Figs. 1, 2 and 3. The flywheel 8 cham-- bered on its inner face to present two shoal ders- 1'0 and 11, the purpose which wil hereiniifter appear. Mounted on. the spindle 5 in position to lie in thechamher toe flywheel are the loci-z member a1. 1 int member 13, each of which or plurality of arms, preferably tour. arms of the loclzi member 12 are of such length of formation that theylie in contact with the shoulder 10 when theflywheel is i1. and while in contact with this shoulder the locking; member holds the spindle stationary. The arms J ac Hating: memher are longer than those I. the locking member 12 and the'two members are set so that the arms oi' the one lie between the the other, thus bringhig one of the arms or arms of the actuating member approxi into contact with the shoulder it, as shown in Fin-[3. In this position the arm of the actuating'member which lies adi cent to the shoulder 11 is in the path of a lug 14 projected toward the center of the flywheel from a member 15 attached to the flywheel so as to form a continuation of the shoulder 11. A notch, or recess. 16 is formed in the shoulder 10 beneath the lug I l, as indicated in Figs. 2- and S and, when, in the course oi a rotation of the fivwheelrthe lug 14: engages the actuating memberltj, a par-- tial rot.

non of ninety degrees is impart-ed to the actuating; member, the spindle 5 and ber, as shown in Fig. 2.

ing permitted by the notch 16 which afl'ords space for the movement of the locking mem- From the foregoingdescript-ion, it will be seen that ateach rotation of the flywheel the actuating member and the parts connected therewith are turned through an angle. of

ninety degrees, and that the period required for this movement is but a small part of the to the sprocket wheel is accordin period of rotation of the flywheel, as all the movement of the actuating member 13 and the associated parts takes'place during the time required forthe passage of the lug 14 past the spindle 5. The movement imparted ly quick and the period of rest of the sproc et wheel is relatively long. When the parts are designed in the proportions drawings, the period of movement of the sprocketwheel is approximately onet'ent-h as long as the period of rest.

In Figs'.- 4, 5 and 6 I have illustrated a slightly dilierent construction by which movement is impartedto the spindle 5 with equal quickness but with the production of less noise than is produced by the arrangement of parts shown in .Figs. 1, 2 and 3. In Figs. 4,. 5 'and 6 the flywheel 8 is chambered somewhat differently from the -flywheel 8 already described and presents a single wide shoulder 10% Instead of the locking member 12 a larger locking member 12 is provided and on the face of the locking member, adjacent to the .fiywheel, are provided 'four studs 13 which serve in lieu' ozfthe actuating member 13 already de- 12 as the diamondshaped the studs, or pins,

scribed Instead of the member 15 with its lug 14 a diamond shaped projection 14 is provided on the inner face of the flywheel in position to engage the pins orstuds 13? as, shownin Figs. 4 and 5. Opposite the proqection l l 'a notch or recess 15 is provided to permit rotative movement of the member projection 14"" acts upon the, studs or pins 13. v i

It will be noted that the dimensions of the diamond shaped projectionl l are such that in passing the locking member 12 the sides of the projection move into engagement with with.a sliding motion so that there is no blow or shock of. impact and in studs, or pins, the diamond shaped projection prevents the locking member from coming violently into contact with the shoulder 10. In this way the noise of operation is reduced to a minimum and wear upon the .working parts is greatly reduced. The

period of the movement of the-sprocket, when actuated by the mechanism illustrated shown in the passing out of engagement with the I in Figs. 4,5 and 6, in relation to the total 1 period of'rotation of the flywheel is substantiallythe same as when-actuated bythe mechanism shown in Figs'l, 2 and 3. From the foregoing description andthe drawings it will be readily seen that the length of the period of the movement of the filmdepends upon the size of the flywheel and the distance of the sprocket spindle 5 from the flywheel spindle 7, so that by altering these proportionsthe period of movement of the film in relation to its period of rest may be increased or diminished.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: i

. 1. In apparatus of the characterspecified' 'a device for producing intermittent rotation comprising a continuously rotating member having an internal annular shoulder with-a notch or recess therein, a rotatable locking member engaging'said shoul- .der and held against rotation'thereby, and

'interengaging devices carried by said locking member and said continuously rotating member by which a partial rotation of degrees is imparted tosaid locking member when said locking memberiis adj acentto the notch or recess in said shoulder.- v

2. In apparatus, of'the character specified a device for producing intermittent rotationv comprising a continuously rotatingmember having an internalannular shoulder with a notch or recess therein, a rotatable locking member arranged te turn about an axis eccentric to. the said continuously rotating member and normally lying said shoulder and held thereby against rotation, and cooperating members carried-by' said rotating member and said locking member whereby a' partial rotation of .90 dein contact with grees is imparted to said locking .member when the notch or recessin said shoulder passes said lockingmember.

3. In apparatus of the character specified a device for producing intermittent rotation comprising a continuously rotating driving shaft and member fixed on said driving shaft and presenting aninternal annular shoulder with a, gap or recess therein; a driven shaft between'the said driving shaft "and said shoulder, a locking member mountmond shaped cam-carried by saidcontinuously rotating member and [a plurality'of pins carried by said locking memberand adapted to be engaged by said cam to impart a partial rotation to said member when adjacent to the notch or recess in a said Shoulder.

5. In apparatus 01E the character specified, a device for producing intermittent rotation COIXIPIISIIIg, a continuously rotating member having an annular shoulder with a notch or recess therein, a rotatable looking member engaging said shoulder during the greater part of the rotation of the con-' tinuously rotating member, and hav ng a I plurality of projections thereon, sub- .New York and stantially diamond shaped cam mounted on said continuously rotating member, and adapted to impart a partial rotation to said locking vmember by engagement with the projections thereon, when said locking member is not in engagement with said shoulder. Signed at New York city in the county of State of New York this sec- 0nd day of February A. D. 1909.

' NICHOLAS POWER.

Witnesses: I

BAXTER MORTON, LAWRENCE W. ATWATER. 

